Potamyia ifanadiana, Oláh & P.C & Malicky, 2006

Oláh, J., P. C & Malicky, H., 2006, A revision of the lotic genus Potamyia BANKS 1900 (Trichoptera: Hydropsychidae) with the description of eight new species, Linzer biologische Beiträge 38 (1), pp. 739-777 : 743

The P. ifanadiana -group

This group contains the largest-sized species of the genus. All are dark pigmented, more or less fuscous, unlike the other groups which are yellow or yellowish-brown in colour. The antennae are also very long, up to twice length of forewing. Ninth abdominal segment robust and very rounded anterolaterad, dorsum reduced, apical lobe on posterolateral margin well developed with broad base and rounded apically. Basal segment of clasper very robust and straight with dilated base. Tenth tergum small compared to ninth segment, elongated horizontally with weakly developed hook formation; setose warts elevated and situated near middle of tergum. The species P. ifanadiana , P. tofina , P. andoba , P. karafa , P. andria and P. korasha comprise this group; all are restricted to Madagascar.